Is Plushenko Too Old For This Sport?

It was sad to see Plushy skate injured and perform far below his high standard at Europeans. He has now withdrawn due to injury. I think the sport is so hard on the body that for someone who has taken a beating from 20+ years of intense training is too much. I admire that he wants to skate in Sochi but it seems like a bad idea to continue training to compete at the highest levels when he can do permanent damage to his knees, hips, back, etc. He has won EVERYTHING in the sport already so I just question if skating an Olympics in your home country is worth the risk.